Hydraulics & Fluid Mechanics According to Bernoulli’s equation for steady ideal fluid flow the energy is constant along a stream-line but may vary across streamlines velocity and pressure are inversely proportional total energy is constant throughout principle of conservation of mass holds the energy is constant along a stream-line but may vary across streamlines velocity and pressure are inversely proportional total energy is constant throughout principle of conservation of mass holds ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe) 3/4 R 2/3 R 1/3 R 1/2 R 3/4 R 2/3 R 1/3 R 1/2 R ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is 200 160 less than 1 between 1 and 100 200 160 less than 1 between 1 and 100 ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is directly proportional to Reynolds number and independent of pipe wall roughness directly proportional to pipe wall roughness and independent of Reynolds number inversely proportional to Reynolds number and directly proportional to pipe wall roughness inversely proportional to Reynolds number and indpendent of pipe wall roughness directly proportional to Reynolds number and independent of pipe wall roughness directly proportional to pipe wall roughness and independent of Reynolds number inversely proportional to Reynolds number and directly proportional to pipe wall roughness inversely proportional to Reynolds number and indpendent of pipe wall roughness ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head) 2 H/5 H/3 H/2 2 H/3 2 H/5 H/3 H/2 2 H/3 ANSWER DOWNLOAD EXAMIANS APP
Hydraulics & Fluid Mechanics The difference of pressure between the inside and outside of a liquid drop is (d)p = 2T/r (b)p = T/r p = T/2r (a)p = Txr (d)p = 2T/r (b)p = T/r p = T/2r (a)p = Txr ANSWER DOWNLOAD EXAMIANS APP
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